Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2019   09:58:55   (  -0.01,-128.03) (   0.17,-128.82)   89.14                80
 12/15/2019   09:42:49   (   0.00,-128.00) (  -0.83,-124.28)  423.85                80
 12/16/2019   22:02:04   (   0.02,-127.92) (  -0.37,-129.58)  189.92                80
 12/17/2019   21:45:59   (   0.01,-127.88) (   0.64,-125.05)  322.92                80
 12/19/2019   10:05:06   (  -0.03,-127.85) (   0.50,-130.32)  280.87                80
 12/20/2019   09:49:01   (  -0.02,-127.81) (  -0.50,-125.79)  231.79                80
 12/21/2019   22:08:16   (   0.03,-127.72) (  -0.69,-131.09)  382.59                80
 12/22/2019   21:52:10   (   0.02,-127.68) (   0.25,-126.54)  129.92                80
 12/24/2019   10:11:17   (  -0.04,-127.65) (   0.89,-131.81)  474.42                80
 12/25/2019   09:55:11   (  -0.03,-127.60) (  -0.12,-127.28)   37.69                80